Alger County Climate
Alger County, Michigan
Avg Annual Temp
41.6°F
Annual Precip
35.9"
Annual Snowfall
162.5"
Extreme Heat Days
3.1399999999999997
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Alger County Weather
Deep Snow and True Northern Cold
Alger County records an average annual temperature of 41.6°F, making it one of the colder locales in the United States. Its climate is defined by heavy lake-effect precipitation and a winter that lasts much longer than the national norm.
Among Michigan's Coldest Regions
With an annual average of 41.6°F, Alger County ranks well below the state average of 45.7°F. It represents the rugged climate of the Upper Peninsula, where annual precipitation of 35.9 inches slightly exceeds the state average.
Warmer Than Baraga, Equal to the UP
Alger’s 41.6°F average is slightly warmer than neighboring Baraga County at 40.2°F. However, it faces significantly more snowfall than many neighbors, driven by its unique positioning along the Lake Superior shoreline.
Massive Snowfall Defines the Year
Alger County endures a staggering 162.5 inches of annual snowfall, nearly four times the state average. July remains cool with an average of 64.6°F, and the county typically sees only 3 days of extreme heat per year.
Heavy Equipment is a Requirement
A professional-grade snowblower is essential for managing the 162.5 inches of annual snow. Homeowners can likely skip central air conditioning, as the summer average stays a comfortable 62.7°F.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.